Loose-leaf binder.



PATENTED JULY 2a, 1908.

A. CHRONIK.' Loos 1.5111 BINDER. APPLIOATION 111.1111 JULY 1 1907.

2 SHEETS-SHEET 1.

PATENTED JULY 28,

` A. CHRONIK.:

Loos LEARBINDBR. APPLIO-ATION FILED JULY 1. 1907.-

2 SHEETSr-SHEBT 2.

NVENTOH Afro/Mfrs.

dal

AUGUST CHRONIK, OF NEW YORK, N. Y.

LOOSE-LEAF BINDER.

No. 894,601.l

Specification of Letters Patent.

Application filed July 1, 1907.

Patented July 28, 1908.

seria No. 381,628.

simple and durable in construction and ar-` ranged to permit convenientopening of the binding flanges for the insertion or removal of theleaves `and to allow closing of the binding flanges for securely bindingthe leaves in place, the binder being adapted to be locked against theremoval of the leaves by unauthorized persons.

The invention consists of novel features and parts and combinations ofthe same, which will be more fully described hereinafter and thenpointed out in the claims.

A practical embodiment of the invention is represented in theaccompanying drawings forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure 1 is a plan view of the improvement; Fig. 2 is a longitudinalsectional elevation of the same, on-the line 2 2 of Fig. 1; Fig. 3 is atransverse section of the same on the line 3-3 of Fig. 2; Fig. 4 is asimilar view of the same on the line 4-4 of Fig. .1; Fig. 5 is a similarview of the same on the line 5 5 of Fig. 1; and Fig. 6 is a plan viewofthe key for unlocking the binder.

The binding flanges A, A are mounted to slide toward and from each otheracross the back plate B, and the said binding flanges A, A are providedwith telescoping posts C for the reception of the leaves in the usualmanner, and on the said binding flanges are secured the covers (notshown).

The binding flanges A, A are actuated-by the use of two three-armedlevers D, D mounted to turn on pivots E secured to the back plate B anddepending therefrom, as plainly indicated in Fig. 2. The diametricallyextending arms of the three-armed levers D, D are provided withelongated slots D, D2 into which project studs F, F secured to thebinding flanges A, A the said studs F, F projecting through transverselyextending elongated slots B B2 formed in the back plate B. The thirdarms of the leversD, D are provided with elongated slots D3 into Whichproject studs G attached to an actuating plate H having longitudinallyextending elongated slots H through which project the pivots E, so thatthe actuating plate H is mounted to slide longitudinally, as will bereadily understood by reference to Fig. 2.

One end of the actuating plate is provided with a depending nut H2 intowhich screws a screw rod I mounted to turn in a bearing J depending fromthe back plate B, and the outer square end I of the screw rod I isadapted to be engaged by a suitable crank arm, to permit the user of theloose leaf binder to turn the screwrod I with a view to shift theactuatingplate longitudinally, that is, according to the direction inwhich the screw rod I is turned. Now when moving the actuating plate Hin the direction of the arrow a then the studs G impart a swingingmotion to the levers D, D, which by the studs F, F impart a transverseand outward slid- `ing movement to the binding flanges A, A,

to open the same for the insertion or removal of a loose leaf on thetelescoping posts C.'

When the actuating plate H is shifted in the inverse direction of thearrow a then the levers D, D receive a return swinging motion by theaction of the studs G, and the binding flanges A, A are lifted towardeach other by the action of the studs F, F. Thus the binding flanges A,A are closed to securely bind the new leaves in position between thebinding flanges.

In order to lock the screw rod I against turning by unauthorizedpersons, the following device is provided: On the screw rod I is secureda toothed wheel K engaged by a spring awl L attached to the back plateB, to hold) the toothed wheel K and consequently the screw rod Inormally against turning. The spring pawl L is adapted to be lifted outof engagement with the toothed wheel K by the use of' a key N insertedby the user of the device through a key-hole in one end of the backplate B, the forward beveled end N of the key bein adapted to pass underthe spring pawl L, to lIift the same out of engagement with the toothedwheel K. Thus as long as the key N remains inserted the pawl L is liftedout of engagement with the ratchet wheel K, to permit the operator toturn the screw rod I in either direction for shifting vthe actuatingplate H longitudinally as above explained, and with a view to open orclose the binding flanges A, A. When the key N is withdrawn, the pawl Lby its own resiliency again engages the toothed wheel K, to lock thesame and the screw rod l against turning.

From the foregoing it will be seen that the three-armed levers D, D canbe readily actuated, to impart an easy transverse sliding movement tothe binding flanges A, A for moving the latter into an open or a closedposition. i

The loose leaf binder shown and described is composed of comparativelyfew parts, which can be cheaply manufactured, readily assembled and arenot liable easily to get out of order.

Having thus described my invention, l claim as new and desire to secureby Letters Patent:

l. A loose leaf binder comprising a back plate, parallel binding flangesmovable transversely thereof, three armed levers fulcrumed at theirmiddle and having an arm pivotally connected with each binding flangefor moving the same toward and from each other, an actuating platehaving longitudinal movement and pivotally connected with the third arm'of each lever for imparting a swin ing motion to the same on moving thesaid p ate longitudinally, and means for moving the plate comprising athreaded rod connected with the back plate, and a nut connected with theactuating plate through which the rod 1s threaded, the rod beingprovided with a square head for engagement by a hey.

2. 1005@ leaf binder C011] )l'lSlllU' it back l h lait/e 311331191bllldlno l'lLUC/S lHOVlfblC lil'llls'- y D o versely thereof, threearmed levers fnlcrumed at their middle and having an arm pivotallyconnected with each binding llange for moving the same toward or fromeach other, an

actuating plate having longitudinal movement and pivotally connectedwith the third arm of each lever for imparting a swinging motion to thesame on moving the said plate longitudinally, and means -for moving theplate comprising a threaded rod connected f AUGUST Cll RON l l.

Witnesses:

THEO. G. Hos'rnn, EVERARD B. MARSHALL.

